From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-9.7 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,UNPARSEABLE_RELAY,URIBL_BLOCKED, USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 9AE6EC3A5A5 for ; Thu, 5 Sep 2019 07:54:19 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 6DD142173B for ; Thu, 5 Sep 2019 07:54:19 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="kYQr+mzo" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 6DD142173B Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=mediatek.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20170209; h=Sender: Content-Transfer-Encoding:Content-Type:Cc:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-ID:Date:Subject:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=Njbr99CEUsqPhkFkz6HK4DYeW58oRB/rLHlgMTK39A8=; b=kYQr+mzok1kGcG 37OO87Rbb/meyyR63kwCaNVNWWKqOhLg29BaToHqkpowxEpx0DRSyQbwktMQ2APU/rW98CN793i1g lGHBMv+ewsHdRFZMCFYUcFHxSCdqsDolyJcrCOAxj9xLd9gpA8ZFu0/tKBa2Ccvyd0BcsAHYb5UXT v2fLVZ01IVBNXs8ZGx2AC2UnZCp6KIIF8jZNGo1EEU5Sm688oZEvzWZ620qm4oIm4nob8snz3nUiM Pp57QyY3k/z1O/jxSCDMIXTwZ9T0wS9bKMExNqB22REfvA/loB8EhKsdTv6xbP1xUPnSOFT8wjItu RmNWEb+ST8ad8uLVsUGA==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.92 #3 (Red Hat Linux)) id 1i5mar-0006e9-R8; Thu, 05 Sep 2019 07:54:14 +0000 Received: from mailgw01.mediatek.com ([216.200.240.184]) by bombadil.infradead.org with esmtps (Exim 4.92 #3 (Red Hat Linux)) id 1i5maG-00068R-Qy; Thu, 05 Sep 2019 07:53:38 +0000 X-UUID: c2414732de1b45f495212f7a7ea1af39-20190904 X-UUID: c2414732de1b45f495212f7a7ea1af39-20190904 Received: from mtkcas68.mediatek.inc [(172.29.94.19)] by mailgw01.mediatek.com (envelope-from ) (musrelay.mediatek.com ESMTP with TLS) with ESMTP id 368830117; Wed, 04 Sep 2019 23:53:27 -0800 Received: from MTKMBS07N2.mediatek.inc (172.21.101.141) by MTKMBS62DR.mediatek.inc (172.29.94.18) with Microsoft SMTP Server (TLS) id 15.0.1395.4; Thu, 5 Sep 2019 00:53:25 -0700 Received: from mtkcas08.mediatek.inc (172.21.101.126) by mtkmbs07n2.mediatek.inc (172.21.101.141) with Microsoft SMTP Server (TLS) id 15.0.1395.4; Thu, 5 Sep 2019 15:53:24 +0800 Received: from localhost.localdomain (10.17.3.153) by mtkcas08.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.0.1395.4 via Frontend Transport; Thu, 5 Sep 2019 15:53:23 +0800 From: Chaotian Jing To: Ulf Hansson Subject: [PATCH v2 2/2] mmc: block: add CMD13 polling for ioctl() cmd with R1B response Date: Thu, 5 Sep 2019 15:53:18 +0800 Message-ID: <20190905075318.15554-3-chaotian.jing@mediatek.com> X-Mailer: git-send-email 2.18.0 In-Reply-To: <20190905075318.15554-1-chaotian.jing@mediatek.com> References: <20190905075318.15554-1-chaotian.jing@mediatek.com> MIME-Version: 1.0 X-MTK: N X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20190905_005337_008163_616573BF X-CRM114-Status: GOOD ( 14.69 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Jens Axboe , Chris Boot , srv_heupstream@mediatek.com, Wolfram Sang , linux-mmc@vger.kernel.org, Zachary Hays , YueHaibing , linux-kernel@vger.kernel.org, Ming Lei , Avri Altman , linux-mediatek@lists.infradead.org, Hannes Reinecke , Matthias Brugger , Chaotian Jing , linux-arm-kernel@lists.infradead.org Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org currently there is no CMD13 polling and other code to wait card change to transfer state after R1B command completed. and this polling operation cannot do in user space, because other request may coming before the CMD13 from user space. Signed-off-by: Chaotian Jing --- drivers/mmc/core/block.c | 146 +++++++++++++++------------------------ 1 file changed, 55 insertions(+), 91 deletions(-) diff --git a/drivers/mmc/core/block.c b/drivers/mmc/core/block.c index aa7c19f7e298..ee1fd7df4ec8 100644 --- a/drivers/mmc/core/block.c +++ b/drivers/mmc/core/block.c @@ -408,38 +408,6 @@ static int mmc_blk_ioctl_copy_to_user(struct mmc_ioc_cmd __user *ic_ptr, return 0; } -static int ioctl_rpmb_card_status_poll(struct mmc_card *card, u32 *status, - u32 retries_max) -{ - int err; - u32 retry_count = 0; - - if (!status || !retries_max) - return -EINVAL; - - do { - err = __mmc_send_status(card, status, 5); - if (err) - break; - - if (!R1_STATUS(*status) && - (R1_CURRENT_STATE(*status) != R1_STATE_PRG)) - break; /* RPMB programming operation complete */ - - /* - * Rechedule to give the MMC device a chance to continue - * processing the previous command without being polled too - * frequently. - */ - usleep_range(1000, 5000); - } while (++retry_count < retries_max); - - if (retry_count == retries_max) - err = -EPERM; - - return err; -} - static int ioctl_do_sanitize(struct mmc_card *card) { int err; @@ -468,6 +436,58 @@ static int ioctl_do_sanitize(struct mmc_card *card) return err; } +static inline bool mmc_blk_in_tran_state(u32 status) +{ + /* + * Some cards mishandle the status bits, so make sure to check both the + * busy indication and the card state. + */ + return status & R1_READY_FOR_DATA && + (R1_CURRENT_STATE(status) == R1_STATE_TRAN); +} + +static int card_busy_detect(struct mmc_card *card, unsigned int timeout_ms, + u32 *resp_errs) +{ + unsigned long timeout = jiffies + msecs_to_jiffies(timeout_ms); + int err = 0; + u32 status; + + do { + bool done = time_after(jiffies, timeout); + + err = __mmc_send_status(card, &status, 5); + if (err) { + dev_err(mmc_dev(card->host), + "error %d requesting status\n", err); + return err; + } + + /* Accumulate any response error bits seen */ + if (resp_errs) + *resp_errs |= status; + + /* + * Timeout if the device never becomes ready for data and never + * leaves the program state. + */ + if (done) { + dev_err(mmc_dev(card->host), + "Card stuck in wrong state! %s status: %#x\n", + __func__, status); + return -ETIMEDOUT; + } + + /* + * Some cards mishandle the status bits, + * so make sure to check both the busy + * indication and the card state. + */ + } while (!mmc_blk_in_tran_state(status)); + + return err; +} + static int __mmc_blk_ioctl_cmd(struct mmc_card *card, struct mmc_blk_data *md, struct mmc_blk_ioc_data *idata) { @@ -611,16 +631,12 @@ static int __mmc_blk_ioctl_cmd(struct mmc_card *card, struct mmc_blk_data *md, memcpy(&(idata->ic.response), cmd.resp, sizeof(cmd.resp)); - if (idata->rpmb) { + if (idata->rpmb || (cmd.flags & MMC_RSP_R1B)) { /* - * Ensure RPMB command has completed by polling CMD13 + * Ensure RPMB/R1B command has completed by polling CMD13 * "Send Status". */ - err = ioctl_rpmb_card_status_poll(card, &status, 5); - if (err) - dev_err(mmc_dev(card->host), - "%s: Card Status=0x%08X, error %d\n", - __func__, status, err); + err = card_busy_detect(card, MMC_BLK_TIMEOUT_MS, NULL); } return err; @@ -970,58 +986,6 @@ static unsigned int mmc_blk_data_timeout_ms(struct mmc_host *host, return ms; } -static inline bool mmc_blk_in_tran_state(u32 status) -{ - /* - * Some cards mishandle the status bits, so make sure to check both the - * busy indication and the card state. - */ - return status & R1_READY_FOR_DATA && - (R1_CURRENT_STATE(status) == R1_STATE_TRAN); -} - -static int card_busy_detect(struct mmc_card *card, unsigned int timeout_ms, - u32 *resp_errs) -{ - unsigned long timeout = jiffies + msecs_to_jiffies(timeout_ms); - int err = 0; - u32 status; - - do { - bool done = time_after(jiffies, timeout); - - err = __mmc_send_status(card, &status, 5); - if (err) { - dev_err(mmc_dev(card->host), - "error %d requesting status\n", err); - return err; - } - - /* Accumulate any response error bits seen */ - if (resp_errs) - *resp_errs |= status; - - /* - * Timeout if the device never becomes ready for data and never - * leaves the program state. - */ - if (done) { - dev_err(mmc_dev(card->host), - "Card stuck in wrong state! %s status: %#x\n", - __func__, status); - return -ETIMEDOUT; - } - - /* - * Some cards mishandle the status bits, - * so make sure to check both the busy - * indication and the card state. - */ - } while (!mmc_blk_in_tran_state(status)); - - return err; -} - static int mmc_blk_reset(struct mmc_blk_data *md, struct mmc_host *host, int type) { -- 2.18.0 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel